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Environmental analysis applying inner-shell spectroscopies and the molecular orbital theory

Explore environmental analysis through inner-shell spectroscopies and molecular orbital theory. Discover portable TXRF technology advancements. Learn about detection limits and quantum chemistry applications.

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Environmental analysis applying inner-shell spectroscopies and the molecular orbital theory

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  1. Environmental analysis applying inner-shell spectroscopies and the molecular orbital theory Jun Kawai Kyoto University Acknowledgements S. Kunimura, N. Sasaki Asahi Glass Foundation MTA-JSPS Joint Resaerch Project

  2. Portable TXRF with Hamamatsu Photonics tube (1W)

  3. http://www.x-ray.co.jp/imp_pico.html http://www.rigaku.co.jp/products/p/xfex0015/ 5 kg 37kg www.fisichem.com 70kg Non-mono X-ray tube 1 W Detection limit 1 ng August 2007 http://www.technos.co.jp/products/index.html

  4. X-ray XRF + Scat. Non-TXRF XRF X-ray TXRF K: 6 ng Ca，Sc，Ti，V，Cr，Mn，Fe: 8 ng Ni: 24 ng S: 435 ng TXRF：Yoneda & Horiuchi (1971)

  5. TXRF Yoneda & Horiuchi (1971) Kunimura Horiuchi April, 2007

  6. Vanadium containing mineral water Blank 20 x 7 mL 9 ng of V

  7. 20 mL ｘ 0.5 ppm Cr K: 6 ng Ca, Sc, Ti, V, Cr, Mn, Fe: 8 ng, Ni: 24 ng S: 435 ng

  8. 20 mm 100 mm 0.8 mm 1 mm 5 mm Egorov: X-Ray Spectrom. 33 (2004)360 Si wafer Al strips

  9. Conventional XRF TXRF H.J. Sanchez: Nucl. Instr. and Meth. in Phys. Res. B 194 (2002) 90 Detector www.fisichem.com Sample Reflectors

  10. Waveguide Mode Formation 2 3 Air Mo Be Mo Substrate

  11. ~150 mm … X-ray 50 mm X-rays ~25 mm … 50 mm W Si Music plate lens X-ray wave guide Ca - Fe 4 ng, Ni 12 ng

  12. Detection limit for various TXRF spectrometers

  13. Donau Kamogawa Kyoto

  14. Standard soil sample (KKS) Pb 1077 ppm As 408 ppm Se 314 ppm Cd 614 ppm Hg 72 ppm 50 kV X-ray tube zoom

  15. Conclusions • Non-mono X-ray tube 1 W, TXRF: Detection limit 1 ng at August 2007 • X-ray optics: wave guides, music lens, discharge X-ray tube, … • Quantum chemistry-Pb La/Lb ratio…

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